CN102439381A - Refrigeration apparatus - Google Patents

Refrigeration apparatus Download PDF

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Publication number
CN102439381A
CN102439381A CN2010800220482A CN201080022048A CN102439381A CN 102439381 A CN102439381 A CN 102439381A CN 2010800220482 A CN2010800220482 A CN 2010800220482A CN 201080022048 A CN201080022048 A CN 201080022048A CN 102439381 A CN102439381 A CN 102439381A
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CN
China
Prior art keywords
cold
hydrogen fluoride
producing medium
refrigerating plant
scavenger
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010800220482A
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Chinese (zh)
Inventor
佐藤成广
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Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Filing date
Publication date
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Publication of CN102439381A publication Critical patent/CN102439381A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003Filters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02Materials undergoing a change of physical state when used
    • C09K5/04Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • C09K5/044Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
    • C09K5/045Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2205/00Aspects relating to compounds used in compression type refrigeration systems
    • C09K2205/10Components
    • C09K2205/12Hydrocarbons
    • C09K2205/126Unsaturated fluorinated hydrocarbons

Abstract

A refrigeration apparatus, in which a refrigerant containing a mixture of a hydrofluoroolefin having a carbon-carbon double bond as base component and a hydrofluorocarbon having no double bond circulates, includes a refrigerant-circulating route extending from compressor 1, via condenser 2 or 4, expansion mechanism 3 and evaporator 4 or 2, back to the compressor 1, in which the refrigerant circulates, and a hydrogen fluoride-scavenging unit 8 for accommodating a hydrogen fluoride scavenger that is installed on the refrigerant-circulating route.

Description

Refrigerating plant
Technical field
The present invention relates to a kind of refrigerating plant, comprise compressor, condenser, expansion mechanism and evaporimeter, the HF hydrocarbon that this refrigerating plant uses not chloride atom and has a carbon-carbon double bond is as cold-producing medium.
Background technology
For example, contain in the kind of refrigeration cycle that the hydrogen fluorohydrocarbon (HFCs) of fluorine atom and hydrogen atom formed in air conditioner or air conditioning for automobiles and be used as cold-producing medium.In addition, based on the viewpoint of the compatibility of cold-producing medium HFC, polarization refrigeration oil (polarized refrigerant oil) for example gathers (alkylidene) glycol (PAG), polyol ester (POE) or polyvinylether (PVE) and has been used for such refrigerating plant.
Traditionally, the material that in such kind of refrigeration cycle, uses (for example fluoroplastics) produces fluorine ion once in a while.As everyone knows, the fluorine ion that the refrigeration oil of ester class is split in the refrigeration oil subsequently decomposes, and the sour composition of generation causes the degraded of insulation of Electric Motor paper in corrosion and the refrigerating plant of the metal sliding material in the refrigerating plant.For overcoming the above problems, have known method, for example through resin heat treatment (referring to, for example patent document 1), make the amount of the fluorine ion that from fluoroplastics, separates be reduced to 1ppm or lower, represent with the concentration in the refrigeration oil.
Reference listing
Patent document 1:JP-A 2004-204679 number
Summary of the invention
The problem that the present invention will solve
Yet, in conventional structure, the cold-producing medium HF hydrocarbon in the slide unit of high-temperature area such as compressor, through with kind of refrigeration cycle in remaining oxygen reaction decomposes produce hydrogen fluoride.Be difficult to prevent that this mode from producing hydrogen fluoride, it causes the problem that the parts that use in the kind of refrigeration cycle possibly degenerated.
Therefore, the purpose of this invention is to provide a kind of refrigerating plant, it allows the stable operation of long period through removing hydrogen fluoride that produces in the kind of refrigeration cycle and the component degradation that suppresses to use in the kind of refrigeration cycle.
Be a kind of refrigerating plant that the present invention relates to of realizing that this purpose makes; Contain as the HF hydrocarbon with carbon-carbon double bond of basic components and the cold-producing medium of mixture that do not have a hydrogen fluorohydrocarbon of two keys and in this refrigerating plant, circulate; This refrigerating plant comprises from compressor; Get back to the cold-producing medium circulating path that compressor extends through condenser, expansion mechanism and evaporimeter; Be installed in the hydrogen fluoride that being used on the cold-producing medium circulating path hold the hydrogen fluoride scavenger and remove the unit, wherein cold-producing medium circulates in this cold-producing medium circulating path.
The effect of invention
In this structure, have the refrigerating plant that the hydrogen fluoride that on the cold-producing medium circulating path, is used to hold the hydrogen fluoride scavenger is removed the unit, can remove the hydrogen fluoride that produces in the refrigerating plant, and it is removed from the cold-producing medium circulating path.Thereby can prevent the degraded of the parts that (being in the kind of refrigeration cycle) uses in the refrigerating plant.Thereby the refrigerating plant that allows long-term stable operation can be provided.
Description of drawings
Fig. 1 is the figure that shows the kind of refrigeration cycle of the refrigerating plant that is shown in the embodiment 1 of the present invention.
Fig. 2 is the sketch map that drier/hydrogen fluoride of demonstration in the key diagram 1 is removed the vertical section of unit 8.
Fig. 3 is the table that shows the relation of refrigerant mixed ratio and GWP.
Fig. 4 is the figure that shows the kind of refrigeration cycle of the refrigerating plant that is shown in the embodiment 2 of the present invention.
Fig. 5 is the sketch map of the vertical section of the storage tank (accumulator) 17 that shown in the key diagram 3.
The specific embodiment
The present invention relates to a kind of refrigerating plant, contain have carbon-carbon double bond HF hydrocarbon as basic components and the cold-producing medium of mixture that does not have a hydrogen fluorohydrocarbon of two keys in this refrigerating plant, circulate.This refrigerating plant has from compressor; Get back to the cold-producing medium circulating path that compressor extends through condenser, expansion mechanism and evaporimeter; Be installed in being used on the cold-producing medium circulating path and hold the hydrogen fluoride of hydrogen fluoride scavenger and remove the unit, wherein cold-producing medium circulates in this cold-producing medium circulating path.The degraded of the parts that can suppress to use in the refrigerating plant in this way is because discharged from kind of refrigeration cycle by the hydrogen fluoride scavenger because of cold-producing medium decomposes the hydrogen fluoride that (in the kind of refrigeration cycle) produces in refrigerating plant.
More specifically, on the cold-producing medium circulating path, the hydrogen fluoride scavenger that is received can with the cold-producing medium position contacting of liquid state on hydrogen chloride be installed removed the unit.When cold-producing medium contacted with liquid state, the collision possibility of the hydrogen fluoride that produces in the kind of refrigeration cycle when collision (collision) possibility between the hydrogen fluoride scavenger contacts than with gaseous state was high.Thereby can more effectively from kind of refrigeration cycle, remove hydrogen fluoride, and the degraded of the parts that can further suppress in this way to use in the refrigerating plant through such structure.
Preferably, hydrogen fluoride removing unit is the storage tank that holds the hydrogen fluoride scavenger.This storage tank is that to be used to hold the not boil-off gas that obtains after the gas-liquid separation be the unit of liquid refrigerant, therefore has the effect that prevents liquid refrigerant is drawn into compressor.Because the run duration liquid refrigerant is stayed in the storage tank, so the hydrogen fluoride scavenger can be removed the hydrogen fluoride in the liquid refrigerant effectively.
Preferably, the hydrogen fluoride scavenger is processed graininess.Can improve the reliability of refrigerating plant like this, the more anti-powdered (pulverization) because the hydrogen fluoride scavenger becomes, thus the powder that minimizing produces circulates in kind of refrigeration cycle and stops up valve region.
The hydrogen fluoride scavenger preferably contains at least a in calcium carbonate, calcium oxide and the calcium hydroxide.Can make the hydrogen fluoride scavenger not too expensive through containing said components.
Preferably, cold-producing medium is providing 5 or bigger and 750 or the ratio of littler global warming potential, contain the HF hydrocarbon tetrafluoeopropene as basic components and hydrogen fluorohydrocarbon difluoromethane or/and the mixture of 2 yuan or 3 yuan components of pentafluoroethane.Even the cold-producing medium that does not reclaim is discharged in the atmosphere, the adverse effect to global warming is minimized.
Below, with illustrating and describing suitable embodiment of the present invention.
(embodiment 1)
Fig. 1 is the figure that shows the kind of refrigeration cycle of refrigerating plant in the embodiment 1 of the present invention.In Fig. 1, refrigerating plant have compressed refrigerant cooling compressor 1, make condensation of refrigerant or evaporation outdoor heat converter 2, make expansion mechanism that for example has expansion valve 3 that cold-producing medium expands and the indoor heat converter 4 that makes cold-producing medium evaporation or condensation as the cold-producing medium circulating path.Refrigerating plant has the interconnected pipeline of above-mentioned parts 5, cross valve 6 and storage tank 7 in addition, and cold-producing medium and refrigeration oil are as the running medium.
In refrigerating plant shown in Figure 1; In the zone of expansion mechanism 3, form in addition bypass line, and this bypass line has and is used for holding the hydrogen fluoride scavenger, also removes unit 8 (below be called remove the unit), check-valves (check valve) 9 and capillary 10 as the hydrogen fluoride of drier.Capillary 10 is less than the amount of the cold-producing medium of the expansion mechanism 3 of flowing through through the amount that makes the cold-producing medium of removing unit 8 of flowing through, and has the effect of reduction to the influence of cold-producing medium circulating path (kind of refrigeration cycle) running.
Fig. 2 is the sketch map of the vertical section of the removing unit 8 that shown of key diagram 1.In the embodiment of the removing unit 8 that Fig. 2 shows, spring 2, punch metal (punching metal) 13, drier 14 (using ● expression), hydrogen fluoride scavenger 15 (representing with zero) and net 16 place copper pipe 11.
The drier 14 that uses is drier commonly used in the kind of refrigeration cycle.Particularly, most preferably be molecular sieve, but the micro-pore diameter of molecular sieve should suitably be confirmed according to the molecular diameter of the cold-producing medium that uses.For example; If use the cold-producing medium contain R32, it is big and than the little micro-pore diameter of molecular diameter (0.33nm ) of R32 to have a molecular diameter (0.28nm ) than water as the molecular sieve of drier.
If itself and hydrogen fluoride reaction so limit the hydrogen fluoride scavenger 15 that uses especially, but preferably be chosen in output in the hydrogen fluoride cleaning reaction has the accessory substance of less adverse effect to kind of refrigeration cycle scavenger.Preferred especially use with hydrofluoric reaction in do not cause a kind of in calcium carbonate, calcium oxide and the calcium hydroxide of back reaction or their mixture.Calcium carbonate, calcium oxide and calcium hydroxide react with the hydrogen fluoride that is decomposed generation by cold-producing medium according to the reaction equation shown in following:
2HF+CaCO 3→CaF 2+CO 2+H 2O
2HF+CaO→CaF 2+H 2O
2HF+Ca(OH) 2→CaF 2+2H 2O
Shown in above reaction equation, when being used as the hydrogen fluoride scavenger, calcium carbonate output calcirm-fluoride, also output carbon dioxide and water are as accessory substance.Carbon dioxide is an incoagulable gas, if carbon dioxide is present in the system in a large number, can cause efficient to reduce.The generation of water is disadvantageous equally, if because water exists in a large number, it possibly cause for example refrigeration oil decomposition.If but use calcium carbonate, remove bimolecular hydrogen fluoride and only produce the carbon dioxide of a part and the water of a part, and the hydrofluoric advantageous effect that removing has remarkable detrimental effect to kind of refrigeration cycle is greater than detrimental effect.Perhaps, when using calcium oxide or calcium hydroxide, only produce water as accessory substance as the hydrogen fluoride scavenger.Because water can be removed in drier, preferably in kind of refrigeration cycle, drier and hydrogen fluoride scavenger are installed together.Because the hydrogen fluoride through the hydrogen fluoride scavenger will form in the oxidation reaction of cold-producing medium is removed from kind of refrigeration cycle fast, the component degradation that can suppress to use in the kind of refrigeration cycle.
Calcium sulfate with hydrofluoric reaction in also produce calcirm-fluoride, but produce sulfuric acid simultaneously as accessory substance, possibly produce detrimental effect to the kind of refrigeration cycle parts, therefore, should not use calcium sulfate.
In the embodiment of Fig. 2, drier 14 is contained in the copper pipe 11 with admixture with hydrogen fluoride scavenger 15, but can hold respectively.
In addition, expectation is processed drier 14 and hydrogen fluoride scavenger 15 respectively and is had about 1mm or more greatly and less than the particle of the diameter of 10mm.Drier 14 and hydrogen fluoride scavenger 15 remain on net 16 and have between the punch metal 13 of screen size (mesh size) of the particle separation of preventing.And, promote punch metals 13 through spring 12, even like this when flow of refrigerant, drier 14 also is held with hydrogen fluoride scavenger 15 and mobile.In this case, shown in the arrow among Fig. 2, need be from introducing cold-producing medium apart from the inlet of the nearer side of spring 12.If introduce cold-producing medium from the inlet relative with above-mentioned inlet, when spring 12 was promoted by cold-producing medium stream, drier 14 possibly liquefy and efflorescence with hydrogen fluoride scavenger 15 unfriendly.For preventing the particle efflorescence, as shown in Figure 1, need for example to come the regulation cold-producing medium to get into the flow direction of removing unit 8 through check-valves 9 is installed after removing unit 8.
The cold-producing medium of filling in the refrigerating plant shown in Figure 1 to be to provide 5 or bigger and 750 or littler, preferred 300 or the ratio of littler global warming potential, contain the HF hydrocarbon tetrafluoeopropene as basic components and difluoromethane or/and the mixture of 2 yuan or 3 yuan components of pentafluoroethane." basic components " used herein is at least a component that must be used as the cold-producing medium of this embodiment.Basic components is not limited to the highest component of component ratio.
Specifically as shown in Figure 3; When cold-producing medium is when containing the binary composition mixture of difluoromethane; Its with 300 or the amount of littler global warming potential, 44wt% use; And when cold-producing medium contains pentafluoroethane, with 750 or the amount of littler, 19.8wt% and 300 or amount littler, 8.4wt% use.In this way, even the cold-producing medium that is not recovered is discharged in the atmosphere, its adverse effect to global warming is minimized.The temperature difference that has reduction by the refrigerant mixture of above ratio mixed; And demonstrate the character similar with the refrigerant mixture of false azeotropic; Even it is the refrigerant mixture of non-azeotropic, therefore, can improve cooling performance and cooling performance coefficient (COP) in the refrigerating plant.
The refrigeration oil of filling in the cooling compressor 1 shown in Figure 1 contains the refrigeration oil compatible with cold-producing medium.The refrigeration oil of ester class prepares in the dehydration of polyalcohol and saturated or undersaturated aliphatic acid in this embodiment.Use polyalcohol, for example neopentyl glycol, pentaerythrite or dipentaerythritol according to freezing oil viscosity.On the other hand, use straight chain fatty acid for example caproic acid, enanthic acid, n-nonanoic acid or capric acid, or the aliphatic acid of side chain for example 2 methyl caproic acid, 2 ethyl hexanoic acid or 3,5, the 5-tri-methyl hexanoic acid is as saturated fatty acid.The sliding properties that it should be noted that the ester oil that contains straight chain fatty acid is good, but hydrolytic resistance is poor, and it is slightly poor to contain the sliding properties of ester oil of branched chain fatty acid, but hydrolytic resistance is good.
Refrigeration oil according in this embodiment is required; Optionally add different additives; Comprise the for example EP agent of triphenyl phosphate and tricresyl phosphate; The oil of long-chain alcohol for example, the anti-oxidant of DBPC (dibutyl para-cresol) and naphthylamines for example for example contains the acid scavenger and the antifoaming agent of epoxy compounds.
Have in the kind of refrigeration cycle of removing unit 8 shown in Figure 1, from the high-temperature high-pressure refrigerant gas of compressor 1 discharging the cooling operation process, flowing through cross valve 6 and outdoor heat converter 2 during condensation and liquefaction.The cold-producing medium of partial liquefaction passes through expansion mechanism 3 step-downs, and is sent to indoor heat converter 4.During when the liquid refrigerant evaporation of low-temp low-pressure and with the room air heat exchange, it is converted to the gaseous refrigerant of low-temp low-pressure, and returns to compressor 1 through storage tank 7.The operative liquid cold-producing medium of discharging from outdoor heat converter 2 flows to bypass line (bypass circuit) subsequently, through removing unit 8, check-valves 9 and capillary 10, gets back in the kind of refrigeration cycle path.
Heating makes path reverse through cross valve 6 in the operation process, and thus, the cold-producing medium of discharging from compressor 1 cross valve 6 of flowing through gets into indoor heat converters 4, cold-producing medium in indoor heat converter 4 through condensation and liquefaction with the room air heat exchange.The cold-producing medium of liquefaction is because by check-valves 9 blocking-up, the bypass line of not flowing through, and the expansion mechanism 3 inlet chamber outer heat-exchangers 2 of flowing through fully, cold-producing medium flashes to the gas of low-temp low-pressure in outdoor heat converter 2, and delivers in the compressor 1 through storage tank 7.The operative liquid cold-producing medium of expansion mechanism 3 of having flowed through get into to be removed unit 8.Got into the cold-producing medium of removing unit 8 and can stay because of check-valves 9 and remove in the unit 8 and slow reaction, even and in the operation process of heating, also can remove water and the hydrogen fluoride in the system.
Exist with the liquid refrigerant position contacting, for example between condensator outlet and the evaporator inlet or in storage tank 7.But in this embodiment 1, be the water in the absorption refrigeration circulation, drier be installed in the outlet of condenser (outdoor heat converter 2 or indoor heat converter 4).In this case, the easiest and expectation is inserted the hydrogen fluoride scavenger to the molecular sieve filled zone of dryer unit simultaneously.
(embodiment 2)
Fig. 4 is the figure that shows the kind of refrigeration cycle of the refrigerating plant in the embodiment 2 of the present invention.Fig. 4 and Fig. 1 difference are: do not have bypass circulation, and the storage tank (below be called storage tank) 17 that storage tank 7 is contained the hydrogen fluoride scavenger replaces.Except that above-mentioned, this refrigerating plant does not have other difference.Therefore, for the simplification of describing, common means among Fig. 1 and Fig. 4 is specified identical accompanying drawing number.
In refrigerating plant shown in Figure 4, in cooling running, the cold-producing medium of from condenser 1, discharging flow through cross valve 6, outdoor heat converter 2, expansion mechanism 3, outdoor heat converter 4 and cross valve 6 get into storage tank 17, get back to then in the condenser 1.Can liquid refrigerant rest in the storage tank 17 during, remove the hydrogen fluoride that produces in the kind of refrigeration cycle with the hydrogen fluoride scavenger in the reaction.
Fig. 5 is the sketch map of the vertical section of the storage tank 17 of demonstration in the key diagram 4.In Fig. 5, storage tank 17 have be used for from refrigerant gas separate liquid refrigerant container 18, be used to introduce cold-producing medium cold-producing medium inlet tube 19, be used for along the interior move of container 18 introduce cold-producing medium particularly liquid refrigerant baffle plate 20, be used to suck and to cold-producing medium delivery pipe 21, the hydrogen fluoride scavenger 22 of compressor supply refrigerant gas with net 23.
The hydrogen fluoride scavenger 22 that uses is the scavengers that are similar to above-mentioned hydrogen fluoride scavenger 15.In addition, be not limited to especially and hold the method that keeps hydrogen fluoride scavenger 22 in the container 18, remain on the zone that liquid refrigerant retains in the storage tank 17 but most preferably it is held.Expectation is for example through netting 23 extruding hydrogen fluoride scavengers 22 to prevent that it from separating from container 18.But because the zone that liquid refrigerant retains in the container 18 is almost not mobile, unlike needing in the aforesaid removing unit 8 through spring 12 pressurizations.
Other composition for example refrigeration oil of cold-producing medium and filling is identical with described in the embodiment 1 those.
In this embodiment; The present invention being described as what be used for air conditioning mainly is the refrigerating plant of air conditioner; If this refrigerating plant is non-open refrigeration device, advantageous effect is identical but needless to say; Therefore, it is to can be used for the for example technology of the purposes of deep freezer, refrigerator, dehumidifier, heat pump clothes-drying washing machine, Teat pump boiler and warm drink vending machine.
Industrial usability
Refrigerating plant according to the present invention can be used for the for example purposes of air conditioner, air conditioning for automobiles, water heater, deep freezer, refrigerator, dehumidifier, heat pump clothes-drying washing machine, Teat pump boiler and warm drink vending machine, the component degradation that wherein said refrigerating plant can be removed the hydrogen fluoride that produces in the refrigerating plant and prevent to use in the kind of refrigeration cycle through hydrogen fluoride scavenger specific in the system.

Claims (6)

1. refrigerating plant, contain have carbon-carbon double bond HF hydrocarbon as basic components and the cold-producing medium of mixture that does not have a hydrogen fluorohydrocarbon of two keys in said refrigerating plant, circulate, said refrigerating plant comprises:
From compressor, through condenser, expansion mechanism and evaporimeter, get back to the cold-producing medium circulating path that compressor extends, said cold-producing medium circulates in said cold-producing medium circulating path; With
Be installed in the hydrogen fluoride that being used on the said cold-producing medium circulating path hold the hydrogen fluoride scavenger and remove the unit.
2. refrigerating plant as claimed in claim 1 wherein on said cold-producing medium circulating path, can be installed said hydrogen fluoride with the cold-producing medium position contacting of liquid state at the hydrogen fluoride scavenger that is received and remove the unit.
3. according to claim 1 or claim 2 refrigerating plant, it is the storage tank that is used to hold said hydrogen fluoride scavenger that wherein said hydrogen fluoride is removed the unit.
4. like each the described refrigerating plant in the claim 1 to 3, wherein said hydrogen fluoride scavenger is made into graininess.
5. like each the described refrigerating plant in the claim 1 to 4, wherein said hydrogen fluoride scavenger contains at least a in calcium carbonate, calcium oxide and the calcium hydroxide.
6. like each the described refrigerating plant in the claim 1 to 5; Wherein said cold-producing medium is providing 5 or bigger and 750 or the ratio of littler global warming potential, contain the HF hydrocarbon tetrafluoeopropene as basic components and hydrogen fluorohydrocarbon difluoromethane or/and the mixture of 2 yuan or 3 yuan components of pentafluoroethane.
CN2010800220482A 2009-05-21 2010-05-20 Refrigeration apparatus Pending CN102439381A (en)

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JP2009-122893 2009-05-21
JP2009122893A JP2010270957A (en) 2009-05-21 2009-05-21 Refrigerating device
PCT/JP2010/058950 WO2010134646A2 (en) 2009-05-21 2010-05-20 Refrigeration apparatus

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JP (1) JP2010270957A (en)
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WO (1) WO2010134646A2 (en)

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CN110461986A (en) * 2017-03-21 2019-11-15 阿科玛法国公司 Composition based on tetrafluoropropene

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CN104136248B (en) * 2012-02-29 2017-11-14 阿克马法国公司 Air cleaning system for motor vehicles
CN109073295A (en) 2016-01-12 2018-12-21 Agc株式会社 Refrigerating circulatory device and heat circulating system
JP6524990B2 (en) * 2016-12-09 2019-06-05 ダイキン工業株式会社 Heat transfer device and heat transfer method using the same

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Publication number Priority date Publication date Assignee Title
CN105675854A (en) * 2016-01-12 2016-06-15 王明敬 Operating room multifunctional clinical examination and analysis device and method
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JP2010270957A (en) 2010-12-02
EP2433061A2 (en) 2012-03-28

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Application publication date: 20120502